Gems in Hellenistic and Roman Jewellery of Northern Greece: An investigation from the Collections of the Archaeological Museum of Thessaloniki, Greece

Gem-quality sapphires containing ‘exotic’ elements such as Sn, Nb, Zr, Ta, W, are of special int

This paper aims to present the history of the modification of Baltic amber (succinite), and particul

The Salininha emerald deposit located in the municipality of Pilão Arcado, Bahia State, represents